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Ymorist [56]
3 years ago
11

What is the process of structural determination? What are the common techniques for structural determination?

Biology
1 answer:
Rasek [7]3 years ago
5 0

Answer:

Explanation:

Structural determination is a process that use analytical technique to describe in detailed the three dimensional positional coordinates of the scattered centre in an ordered Crystal lattice.

The techniques used are;

X- Ray crystallography, it usese the X-ray diffraction pattern. The structures to be determined by this is first of undergo purification and crystallisation, it is then expose beam of X-ray, which then diffract. It provide detailed atomic information of the structure.

NMR spectroscopy is can be use to determine the structure of protein. The structure to be determined is first of all purified, it is then exposed to strong magnetic field and radio waves. This method supply detailed information of protein in solution.

3D Electron microscopy is used to determined the 3D structures of bigger macromolecules. It uses beam of electron and lenses to show the image of electrons directly.

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Precipitation occurs when _____.
egoroff_w [7]
<span>The correct answer is C. Water vapor cools and condenses. Depending on the rest of the climate, this can either result in rains falling, sometimes even serious monsoons, or it can end in snow and hail which can be extremely dangerous for agriculture and cost countries millions of dollars of failed produce.</span>
8 0
4 years ago
Which domains of life are classified as prokaryotes?
alukav5142 [94]

Prokaryotic organisms fall under the Archaea and Bacteria domains. Prokaryotic organisms lack cell organelles and a distinct nucleus.

Prokaryotes are microscopic organisms from the two of the three main domains of life—Bacteria and Archaea—that are part of the domains of life. (The third eukaryote, eukarya, includes all eukaryotes, such as animals, plants, and fungi.) While the majority of eukaryotes are multicellular, bacteria and archaea are single-celled.

Prokaryotes do not have mitochondria or the majority of the other membrane-bound organelles that make up a eukaryotic cell, in addition to not having a nucleus. Prokaryotic organelles, including bacterial microcompartments, which are thought to be simple organelles enclosed in protein shells, have since been discovered. Previously, it was believed that prokaryotic cellular components within the cytoplasm were unenclosed aside from an outer cell membrane. Some prokaryotes, like cyanobacteria, can form substantial colonies despite being unicellular. Some have multicellular stages in their life cycles, like myxobacteria. Prokaryotes are asexual and do not fuse their gametes during reproduction, though horizontal gene transfer does occur.

To learn more click on link

brainly.com/question/1370127

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5 0
2 years ago
45 POINTS IF CORRECT
katrin [286]

Answers

When doing medical research with human subjects, the following are unavoidable limitations;

It’s often impossible to repeat trials on the same subjects.

Subjects may report an inaccurate medical history.

It can be difficult to control all possible variables

There are ethical or privacy concerns to consider.

Explanation

When doing a medical research that involves human subjects it should be voluntary, informed and consent. The researchers should respect the persons treated as autonomous agents. The volunteers should be protected from physical, mental and emotional harm. The benefits should outweigh the costs.


4 0
4 years ago
Read 2 more answers
Investigator A has biological specimens that are coded and linked to identifiers of the source individuals. Investigator A provi
ladessa [460]

Answer:

The correct answer is option C.

Explanation:

Human subject research is an investigation or research that include human as the subject. In other words, An Investigator conducts clinical research on humans getting data through interaction and intervention of individuals.

investigator A has investigated biological specimens. These specimens are coded and linked to the identifiers. Investigator B's research using biospecimens human subject is not according to the human subject research in the federal regulations as investigator B did not get the individual identifiers.

Thus, the correct answer is option C.

7 0
4 years ago
Antibiotics kills bacterial cells but not our cells. why? * 1 point they only attack viruses animals do not have cell walls, bac
Contact [7]
Our cells are resistant to antibiotics
3 0
3 years ago
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